Types of Redox Reactions
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CHXI08:REDOX REACTIONS

315446 \(\mathrm{3 \mathrm{ClO}_{(\mathrm{aq})}^{-} \longrightarrow \mathrm{ClO}_{3}^{-}+2 \mathrm{Cl}^{-}}\)is an example of

1 oxidation reaction
2 reduction reaction
3 disproportionation reaction
4 decomposition reaction
KCET - 2017
CHXI08:REDOX REACTIONS

315447 Chlorine is passed into dilute, cold \(\mathrm{\mathrm{KOH}}\) solution. What are the oxidation numbers of chlorine in the products formed?

1 \(\mathrm{-1,+5}\)
2 \(\mathrm{-1,+3}\)
3 \(\mathrm{+1,+7}\)
4 \(\mathrm{+1,-1}\)
CHXI08:REDOX REACTIONS

315448 Of the following, the one that is a disproportionation reaction is

1 \(\mathrm{4 \mathrm{H}_{3} \mathrm{PO}_{3} \stackrel{\Delta}{\longrightarrow} 3 \mathrm{H}_{3} \mathrm{PO}_{4}+\mathrm{PH}_{3}}\)
2 \(\mathrm{\mathrm{NH}_{4} \mathrm{NO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{N}_{2} \mathrm{O}+2 \mathrm{H}_{2} \mathrm{O}}\)
3 \(\mathrm{\mathrm{PCl}_{5} \stackrel{\Delta}{\longrightarrow} \mathrm{PCl}_{3}+\mathrm{Cl}_{2}}\)
4 \(\mathrm{\mathrm{Zn}+2 \mathrm{AgCN} \rightarrow g+\mathrm{Zn}(\mathrm{CN})_{2}}\)
CHXI08:REDOX REACTIONS

315449 Which of the following examples does not represent disproportionation?

1 \(\mathrm{\mathrm{MnO}_{2}+4 \mathrm{HCl} \rightarrow \mathrm{MnCl}_{2}+\mathrm{Cl}_{2}+2 \mathrm{H}_{2} \mathrm{O}}\)
2 \(\mathrm{2 \mathrm{H}_{2} \mathrm{O}_{2} \rightarrow 2 \mathrm{H}_{2} \mathrm{O}+\mathrm{O}_{2}}\)
3 \(\mathrm{4 \mathrm{KClO}_{3} \rightarrow 3 \mathrm{KClO}_{4}+\mathrm{KCl}}\)
4 \(\mathrm{3 \mathrm{Cl}_{2}+6 \mathrm{NaOH} \rightarrow 5 \mathrm{NaCl}+\mathrm{NaClO}_{3}+3 \mathrm{H}_{2} \mathrm{O}}\)
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CHXI08:REDOX REACTIONS

315446 \(\mathrm{3 \mathrm{ClO}_{(\mathrm{aq})}^{-} \longrightarrow \mathrm{ClO}_{3}^{-}+2 \mathrm{Cl}^{-}}\)is an example of

1 oxidation reaction
2 reduction reaction
3 disproportionation reaction
4 decomposition reaction
KCET - 2017
CHXI08:REDOX REACTIONS

315447 Chlorine is passed into dilute, cold \(\mathrm{\mathrm{KOH}}\) solution. What are the oxidation numbers of chlorine in the products formed?

1 \(\mathrm{-1,+5}\)
2 \(\mathrm{-1,+3}\)
3 \(\mathrm{+1,+7}\)
4 \(\mathrm{+1,-1}\)
CHXI08:REDOX REACTIONS

315448 Of the following, the one that is a disproportionation reaction is

1 \(\mathrm{4 \mathrm{H}_{3} \mathrm{PO}_{3} \stackrel{\Delta}{\longrightarrow} 3 \mathrm{H}_{3} \mathrm{PO}_{4}+\mathrm{PH}_{3}}\)
2 \(\mathrm{\mathrm{NH}_{4} \mathrm{NO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{N}_{2} \mathrm{O}+2 \mathrm{H}_{2} \mathrm{O}}\)
3 \(\mathrm{\mathrm{PCl}_{5} \stackrel{\Delta}{\longrightarrow} \mathrm{PCl}_{3}+\mathrm{Cl}_{2}}\)
4 \(\mathrm{\mathrm{Zn}+2 \mathrm{AgCN} \rightarrow g+\mathrm{Zn}(\mathrm{CN})_{2}}\)
CHXI08:REDOX REACTIONS

315449 Which of the following examples does not represent disproportionation?

1 \(\mathrm{\mathrm{MnO}_{2}+4 \mathrm{HCl} \rightarrow \mathrm{MnCl}_{2}+\mathrm{Cl}_{2}+2 \mathrm{H}_{2} \mathrm{O}}\)
2 \(\mathrm{2 \mathrm{H}_{2} \mathrm{O}_{2} \rightarrow 2 \mathrm{H}_{2} \mathrm{O}+\mathrm{O}_{2}}\)
3 \(\mathrm{4 \mathrm{KClO}_{3} \rightarrow 3 \mathrm{KClO}_{4}+\mathrm{KCl}}\)
4 \(\mathrm{3 \mathrm{Cl}_{2}+6 \mathrm{NaOH} \rightarrow 5 \mathrm{NaCl}+\mathrm{NaClO}_{3}+3 \mathrm{H}_{2} \mathrm{O}}\)
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CHXI08:REDOX REACTIONS

315446 \(\mathrm{3 \mathrm{ClO}_{(\mathrm{aq})}^{-} \longrightarrow \mathrm{ClO}_{3}^{-}+2 \mathrm{Cl}^{-}}\)is an example of

1 oxidation reaction
2 reduction reaction
3 disproportionation reaction
4 decomposition reaction
KCET - 2017
CHXI08:REDOX REACTIONS

315447 Chlorine is passed into dilute, cold \(\mathrm{\mathrm{KOH}}\) solution. What are the oxidation numbers of chlorine in the products formed?

1 \(\mathrm{-1,+5}\)
2 \(\mathrm{-1,+3}\)
3 \(\mathrm{+1,+7}\)
4 \(\mathrm{+1,-1}\)
CHXI08:REDOX REACTIONS

315448 Of the following, the one that is a disproportionation reaction is

1 \(\mathrm{4 \mathrm{H}_{3} \mathrm{PO}_{3} \stackrel{\Delta}{\longrightarrow} 3 \mathrm{H}_{3} \mathrm{PO}_{4}+\mathrm{PH}_{3}}\)
2 \(\mathrm{\mathrm{NH}_{4} \mathrm{NO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{N}_{2} \mathrm{O}+2 \mathrm{H}_{2} \mathrm{O}}\)
3 \(\mathrm{\mathrm{PCl}_{5} \stackrel{\Delta}{\longrightarrow} \mathrm{PCl}_{3}+\mathrm{Cl}_{2}}\)
4 \(\mathrm{\mathrm{Zn}+2 \mathrm{AgCN} \rightarrow g+\mathrm{Zn}(\mathrm{CN})_{2}}\)
CHXI08:REDOX REACTIONS

315449 Which of the following examples does not represent disproportionation?

1 \(\mathrm{\mathrm{MnO}_{2}+4 \mathrm{HCl} \rightarrow \mathrm{MnCl}_{2}+\mathrm{Cl}_{2}+2 \mathrm{H}_{2} \mathrm{O}}\)
2 \(\mathrm{2 \mathrm{H}_{2} \mathrm{O}_{2} \rightarrow 2 \mathrm{H}_{2} \mathrm{O}+\mathrm{O}_{2}}\)
3 \(\mathrm{4 \mathrm{KClO}_{3} \rightarrow 3 \mathrm{KClO}_{4}+\mathrm{KCl}}\)
4 \(\mathrm{3 \mathrm{Cl}_{2}+6 \mathrm{NaOH} \rightarrow 5 \mathrm{NaCl}+\mathrm{NaClO}_{3}+3 \mathrm{H}_{2} \mathrm{O}}\)
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CHXI08:REDOX REACTIONS

315446 \(\mathrm{3 \mathrm{ClO}_{(\mathrm{aq})}^{-} \longrightarrow \mathrm{ClO}_{3}^{-}+2 \mathrm{Cl}^{-}}\)is an example of

1 oxidation reaction
2 reduction reaction
3 disproportionation reaction
4 decomposition reaction
KCET - 2017
CHXI08:REDOX REACTIONS

315447 Chlorine is passed into dilute, cold \(\mathrm{\mathrm{KOH}}\) solution. What are the oxidation numbers of chlorine in the products formed?

1 \(\mathrm{-1,+5}\)
2 \(\mathrm{-1,+3}\)
3 \(\mathrm{+1,+7}\)
4 \(\mathrm{+1,-1}\)
CHXI08:REDOX REACTIONS

315448 Of the following, the one that is a disproportionation reaction is

1 \(\mathrm{4 \mathrm{H}_{3} \mathrm{PO}_{3} \stackrel{\Delta}{\longrightarrow} 3 \mathrm{H}_{3} \mathrm{PO}_{4}+\mathrm{PH}_{3}}\)
2 \(\mathrm{\mathrm{NH}_{4} \mathrm{NO}_{3} \stackrel{\Delta}{\longrightarrow} \mathrm{N}_{2} \mathrm{O}+2 \mathrm{H}_{2} \mathrm{O}}\)
3 \(\mathrm{\mathrm{PCl}_{5} \stackrel{\Delta}{\longrightarrow} \mathrm{PCl}_{3}+\mathrm{Cl}_{2}}\)
4 \(\mathrm{\mathrm{Zn}+2 \mathrm{AgCN} \rightarrow g+\mathrm{Zn}(\mathrm{CN})_{2}}\)
CHXI08:REDOX REACTIONS

315449 Which of the following examples does not represent disproportionation?

1 \(\mathrm{\mathrm{MnO}_{2}+4 \mathrm{HCl} \rightarrow \mathrm{MnCl}_{2}+\mathrm{Cl}_{2}+2 \mathrm{H}_{2} \mathrm{O}}\)
2 \(\mathrm{2 \mathrm{H}_{2} \mathrm{O}_{2} \rightarrow 2 \mathrm{H}_{2} \mathrm{O}+\mathrm{O}_{2}}\)
3 \(\mathrm{4 \mathrm{KClO}_{3} \rightarrow 3 \mathrm{KClO}_{4}+\mathrm{KCl}}\)
4 \(\mathrm{3 \mathrm{Cl}_{2}+6 \mathrm{NaOH} \rightarrow 5 \mathrm{NaCl}+\mathrm{NaClO}_{3}+3 \mathrm{H}_{2} \mathrm{O}}\)
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